Mineral Resources
Online Spatial Data
Basement domains of the conterminous US and Alaska
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Chugach
Basement domain in the Alaska
Geologic information
Region
Alaska
Crust
Type:
Accretionary wedge
Formation age:
75-0 Ma
Accretion
Type:
Underthrusting
Age:
75-0 Ma
Notes
Forearc fragment, Peninsula arc
Geographic extent
Aleutians East
,
Anchorage
,
Kenai Peninsula
,
Kodiak Island
,
Lake and Peninsula
,
Matanuska-Susitna
,
Sitka
,
Skagway-Hoonah-Angoon
,
Valdez-Cordova
,
Wrangell-Petersburg
,
Yakutat
Bibliographic references
Plafker, George, Moore, J.C., and Winkler, G.R., 1994, Geology of the southern Alaska margin: in Plafker, George, and Berg, H.C., eds., The geology of Alaska: Geological Society of America Geology of North America, v. G-1, p. 389–450.
Amato, J.M., and Pavlis, T.L., 2010, Detrital zircon ages from the Chugach Terrane, southern Alaska, reveal multiple episodes of accretion and erosion in a subduction complex: Geology, v. 38, p. 459–462.
von Huene, Roland, Miller, J.J., and Weinrebe, W., 2012, Subducting plate geology in three great earthquake ruptures of the western Alaska margin, Kodiak to Unimak: Geosphere, v. 8, p. 628–644.